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Modern Phytomorphology

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Peculiarities of botanical composition formation of cereal agrophytocenosis on sod-podzolic soil depending on fertilization

Abstract

U.M. Karbivska, S.E. Degodyuk, E.H. Degodyuk, M.I. Shtakal, I.T. Slyusar, V.V. Moisiienko, H.I. Demydas, V.H. Kurgak, M.A. Tkachenko, N.M. Asanishvili, V.F. Kaminskyi, A. O. Butenko* and H.M. Solovei

Despite the favorable climatic conditions of the region for onion growing, due to significant plowing of foothills (up to 80%) and low productivity, which does not exceed 1.3 t/ha-1.5 t/ha of fodder units, they do not fully perform their fodder production and environmental function. Ago Peculiarities of cereal agrophytocenosis formation when growing on sod-podzolic soil of Precarpathians depending on doses and NPK ratios of mineral fertilizers have been studied is relevant today. Perennial cereal grass was formed from Phléum praténse, Lolium pratense and Bromus inermis, which is kept in agrocenosis at sufficient level with a sprout density of 1440 pcs/m2-2726 pcs/m2, share of sown crops 64%-95% and linear growth in the first moving on nitrogen-free backgrounds 31cm-100 cm. Fertilizers had a different effect on the density and transformation of a sown cereal grass, especially by the years of its usage. With the application of N25 grass height increases by 1.3, and N50 by 1.7 times. In the third year of usage, agrophytocenosis, which is formed from a mixture of cereal grasses, is transformed into a grouping with a predominance of Bromus inermis, the share of which increases with the nitrogen dose increase.

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